Astrakanite: Difference between revisions
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m (Protected "Astrakanite" ([edit=sysop] (indefinite) [move=sysop] (indefinite))) |
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|photo = [[File:CH GR Berguen EvKirche 0098 01 6 Bb 440um IMG 3337.JPG|300px]] | |photo = [[File:CH GR Berguen EvKirche 0098 01 6 Bb 440um IMG 3337.JPG|300px]] | ||
|mineralogical_Name = Astrakanite, Bloedite | |mineralogical_Name = Astrakanite, Bloedite | ||
|chemical_Name = Sodium magnesium | |chemical_Name = Sodium magnesium sulfate | ||
|Trivial_Name = | |Trivial_Name = | ||
|chemical_Formula = Na<sub>2</sub>Mg(SO<sub>4</sub>)<sub>2</sub>•4H<sub>2</sub>O | |chemical_Formula = Na<sub>2</sub>Mg(SO<sub>4</sub>)<sub>2</sub>•4H<sub>2</sub>O | ||
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|Deliqueszenzhumidity = | |Deliqueszenzhumidity = | ||
|Solubility = | |Solubility = | ||
|Density = 2 | |Density = 2.23 g/cm<sup>3</sup> | ||
|MolVolume = 150 | |MolVolume = 150.0 cm<sup>3</sup>/mol | ||
|Molweight = 334 | |Molweight = 334.48 g/mol | ||
|Transparency = transparent | |Transparency = transparent | ||
|Cleavage = none observed | |Cleavage = none observed | ||
|Crystal_Habit = | |Crystal_Habit = | ||
|Twinning = | |Twinning = | ||
|Refractive_Indices = n<sub>x</sub> = 1 | |Refractive_Indices = n<sub>x</sub> = 1.483-1.486<br> n<sub>y</sub> = 1.486-1.488<br> n<sub>z</sub> = 1.487-1.489 | ||
|Birefringence = Δ = 0 | |Birefringence = Δ = 0.004-0.003 | ||
|optical_Orientation = biaxial negative | |optical_Orientation = biaxial negative | ||
|Pleochroism = | |Pleochroism = | ||
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<references/> | <references/> | ||
[[Category:Astrakanite]][[Category:Sulphate]][[Category:Salt]][[Category:InProgress]] | [[Category:Astrakanite]][[Category:Sulphate]][[Category:Salt]][[Category:InProgress]][[Category:Sulfate]] | ||
Revision as of 14:44, 20 December 2011
| Astrakanite[1] | |
| |
| Mineralogical name | Astrakanite, Bloedite |
| Chemical name | Sodium magnesium sulfate |
| Trivial name | |
| Chemical formula | Na2Mg(SO4)2•4H2O |
| Other forms | |
| Crystal system | monoclinic |
| Crystal structure | |
| Deliquescence humidity 20°C | |
| Solubility (g/l) at 20°C | |
| Density (g/cm³) | 2.23 g/cm3 |
| Molar volume | 150.0 cm3/mol |
| Molar weight | 334.48 g/mol |
| Transparency | transparent |
| Cleavage | none observed |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | |
| Comments | |
| Crystal Optics | |
| Refractive Indices | nx = 1.483-1.486 ny = 1.486-1.488 nz = 1.487-1.489 |
| Birefringence | Δ = 0.004-0.003 |
| Optical Orientation | biaxial negative |
| Pleochroism | |
| Dispersion | |
| Used Literature | |
| {{{Literature}}} | |
back to Sulphate
Weblinks[edit]
- ↑ http://www.mindat.org/min-695.html viewed on 29/07/2010